Those who went for a walk in the park this week saw the proof -- an unusual bustling and liveliness at the typically undisturbed mansion inside the 1,800-acre park.

That's because Ghostbusters had arrived.

The Brockton Enterprise reported Wednesday that the three-story, 20-room mansion built in 1910 by Oakes and Blanche Ames is home this week to the cast of the upcoming Hollywood movie "Ghostbusters," a remake of the original 1984 blockbuster hit starring Bill Murray and Dan Aykroyd.

Massive trailers, tents and trucks loaded with equipment sat on the sprawling front lawn of the stone manor. Vans shuttled people and equipment back and forth through the town's back roads, and yellow signs with arrows that said "crew" and "base camp" directed them where to go.

Stars Melissa McCarthy and Kristen Wiig lead the cast for the film, set to be released in July 2016.Oliver Ames High School, not far from Borderland, is also busy with a dozen large trailers serving as a staging area or for the cast and crew while they go back and forth to the set.

The filming inside the mansion began Tuesday and is expected to wrap up Thursday when the the cast moves to a different location in Weymouth. The mansion is typically closed to the public, save for a few days out of the year, when guided tours are given.

Charlie Harrington, who lived in Lakeville and grew up in Cohasset before moving to Los Angeles, is a location manager who has scouted dozens of movie locations for films such as "Good Will Hunting," "Captain Phillips" and the upcoming movie about Boston mob boss James "Whitey" Bulger called "Black Mass," which will be released Sept. 18.

He thought the Ames Mansion would be a perfect fit for "Ghostbusters."

"I've scouted that house for several movies but never used it," said Harrington, 56, who now lives in Dennis. "The director looked at five mansions in the area and they drove around to each one and the director picked this one."

While Harrington said he could not go into specific detail about what part the mansion plays in the film, he did say, "It's definitely a major location in the movie. The Ghostbusters get a call that there might be a ghost there."

The film is set in New York City, and only shots of the inside of the mansion will be used in the film, Harrington said.

"It's supposed to be a New York City mansion. It has a great layout with that grand staircase that comes down in front and the library. It worked perfectly for the scene. It's such a great location."

Because the mansion is in a state park, the studio, Columbia Pictures, had to submit an application to the Department of Conservation and Recreation.Borderland and the Ames Mansion are listed on the National Register of Historic Places. Set designers had to work with a local curator while they transformed the inside of the mansion into a movie set.

Some of the furniture and paintings in the mansion were moved and fake wallpaper and doorways were added, Harrington said.

"Most of the paintings were done by Mrs. Ames and they will be included in the film," Harrington said. "A lot of their furniture is so great we used a lot of the furniture too."

While the filming is being done the park will remain open to the public, but a path surrounding the building will be closed off to allow the movie crews to work.

The film is not Easton's first brush with the silver screen.

In March, part of the independent film "Welcome Home" was shot at the restaurant The Farmer's Daughter on Main Street.

In addition, segments of "Mermaids," a 1990 comedy starring Cher and Winona Ryder, were filmed in town.

Parts of "Ghostbusters" has also been filmed locally in Boston and Weymouth.

One of the original cast members, Bill Murray, is expected to make a cameo appearance in the new film. The Emmy Award-winning Murray was a former co-owner of the Brockton Rox and visited the area during his stint of ownership.